Dr. Margaret M. McMahon, MD
- Medicare services, 2024
- 1,150
- Medicare patients, 2024
- 353
- Part D claims, 2024
- 7,037
- Hospital affiliations
- 5
- Industry payments
- $176
- Practice address
- 2160 S 1st Avenue, Maywood, IL 60153
- Practice phone
- Call (708) 216-3299
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Loyola Medicine Pediatric Mobile Health Unit
Mobile Lab · Maywood, Illinois
Find Dr. McMahon's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Margaret M. McMahon is an internist in Maywood, Illinois
Dr. McMahon practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois.
Dr. McMahon's NPI, 1851366900, was assigned on February 22, 2006. Dr. McMahon graduated from Loyola University of Chicago, Stritch School of Medicine in 1994. Dr. McMahon holds Illinois license 36095051.
- NPI
- 1851366900NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668514175
- NPI enumeration date
- February 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (708) 216-3299
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Margaret M. McMahon practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois
Dr. McMahon's primary practice is Loyola Medicine Pediatric Mobile Health Unit, at 2160 S 1st Avenue, Maywood, IL 60153. The practice phone is (708) 216-3299.
- Loyola Medicine Pediatric Mobile Health Unit2160 S 1st Avenue, Maywood, IL 60153Phone(708) 216-3299
Source: Dmand AI Affiliation Data
Dr. Margaret M. McMahon is affiliated with 7 sites of care and 1 medical group
Dr. McMahon's primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Dr. McMahon is also affiliated with Loyola University Medical Center. The medical group on file is Loyola University Medical Center. Dmand AI also links Dr. McMahon to 4 more hospitals and 1 home health agency, each named with a free account. Dr. McMahon's employer is on file too: a clinical lab.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Margaret M. McMahon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McMahon practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Loyola Medicine Pediatric Mobile Health Unit | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Margaret M. McMahon is one of 5,652 internists in Illinois
Internal medicine is Dr. McMahon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. McMahon is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. McMahon
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Margaret M. McMahon billed Medicare for 1,150 services in 2024
CMS data shows 1,150 Medicare services from Dr. McMahon across 6 procedure codes in 2024, for 353 Medicare patients. Medicare paid $76,238 for them. Every service was in an office.
Dr. McMahon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6502024: 6916%
- Other services
- 2023: 1822024: 459152%
Dr. McMahon compared with the Illinois median for internists, 2024
- Dr. McMahon
- Illinois median
- Medicare services
- 1,150vs 5662.0 times
- Medicare patients
- 353vs 20870% above
- Part D claims
- 6,369vs 28422.4 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. McMahon's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. McMahon and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Margaret M. McMahon treated 353 Medicare patients in 2024, average age 74
CMS counts 353 Medicare patients who saw Dr. McMahon in 2024. The largest group is 65 to 74, with 163 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 10% are also on Medicaid. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. McMahon's median patient age at 70, with 81% women.
Dr. McMahon's Medicare patients by age, 2024
Dr. McMahon's Medicare patients by sex, 2024
- Women29383%
- Men6017%
Chronic conditions among Dr. McMahon's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis48%
- Osteoporosis28%
- Anxiety27%
- Mood disorders22%
- Depression19%
- Diabetes19%
Share of Medicare patients with each condition. A patient can have several.
Dr. McMahon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women81%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Margaret M. McMahon wrote 7,037 Medicare Part D claims in 2024
In 2024, Dr. McMahon wrote 7,037 Medicare Part D claims for 512 patients. 90% of them were for generic drugs. CMS names the drug for 6,369 of them, across 105 drugs with 11 or more claims each, at $398,870 in total drug cost. In 2023, CMS named 6,037 claims across 98 drugs.
Dr. McMahon's Part D claims by kind of drug, 2024
- Generic6,310 claims90%
- Brand-name708 claims10%
- Other19 claims0%
Dr. McMahon's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. McMahon's Part D claims, 2024
- Opioids1%61 of 7,037 claims
- Antibiotics1%41 of 7,037 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,0372024: 6,3695%
Drugs named by CMS: 105 in 2024, 98 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Margaret M. McMahon offers telehealth to Medicare patients
Dr. McMahon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. McMahon as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Margaret M. McMahon received $176 in industry payments from 2021 to 2024
CMS Open Payments shows 5 general payments to Dr. McMahon from 1 drug or device company from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $176.
General payments to Dr. McMahon by program year, 2021 to 2024
Companies that paid Dr. McMahon the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Margaret M. McMahon graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. McMahon graduated from Loyola University of Chicago, Stritch School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Margaret M. McMahon's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Margaret M. McMahon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Margaret M. McMahon's NPI number?
Dr. Margaret M. McMahon's NPI number is 1851366900. It was assigned on February 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Margaret M. McMahon?
Dr. Margaret M. McMahon is an internist in Maywood, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Margaret M. McMahon practice?
Dr. McMahon practices at 2160 S 1st Avenue, Maywood, IL 60153. Dr. McMahon's primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Dmand AI also links Dr. McMahon to 4 hospitals and 1 home health agency.
What is Dr. Margaret M. McMahon's office phone number?
The practice phone on file for Dr. McMahon is (708) 216-3299.
What is Dr. Margaret M. McMahon's medical license number?
Dr. McMahon holds Illinois license 36095051.
Which hospitals is Dr. Margaret M. McMahon affiliated with?
Dr. McMahon is affiliated with Loyola University Medical Center. Dmand AI links Dr. McMahon to 4 more hospitals.
What medical group is Dr. Margaret M. McMahon part of?
Dr. McMahon is linked to Loyola University Medical Center.
Does Dr. Margaret M. McMahon accept Medicare?
Yes. CMS data shows Dr. McMahon billed Medicare for 1,150 services in 2024, and Dr. McMahon accepts Medicare assignment.
Does Dr. Margaret M. McMahon offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. McMahon as offering telehealth services.
How many Medicare patients does Dr. Margaret M. McMahon see?
CMS counts 353 Medicare patients who saw Dr. McMahon in 2024, with an average age of 74.
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What services does Dr. Margaret M. McMahon bill to Medicare?
In 2024, Dr. McMahon's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
Where did Dr. Margaret M. McMahon go to medical school?
Dr. McMahon graduated from Loyola University of Chicago, Stritch School of Medicine in 1994.
What drugs does Dr. Margaret M. McMahon prescribe most?
In 2024 Medicare Part D data, Dr. McMahon's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Rosuvastatin Calcium.
Has Dr. Margaret M. McMahon received payments from drug or device companies?
CMS Open Payments shows $176 in general payments to Dr. McMahon from 1 company from 2021 to 2024. The largest total came from Medtronic, Inc.
How long has Dr. Margaret M. McMahon been practicing?
Dr. McMahon graduated from medical school in 1994, 32 years ago.
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